Robert wants to walk 1 mile for exercise each day. He made a table to show the distance from his home to each of four different places. What is the total distance from home to the store and back home in from home to the library and back home if Robert walks the total distance, will he walk 1 mile? Explain how you found your answer.

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Which of the following is not a subset of {1,2,3}?